Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cb42c48a566f670…

MALICIOUS

PDF

38.9 KB Created: 2020-03-20 11:32:35 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 59bf18f8dbe9b9459086f626a2ca4959 SHA-1: 206c26d02e54641e741468527c51dce94e946f28 SHA-256: 4cb42c48a566f67090be5678f9c613298f3efb214ea110c4caa260976deab492
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which are dynamically generated and point to domains that appear to be part of a link farm. The document body, though partially corrupted, contains text related to 'Poemas de amistad cortos', suggesting a lure to disguise the malicious intent. The primary goal appears to be directing users to a network of external websites, likely for SEO manipulation or to host further malicious content.

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://lowcountryessentials.com/uploads/1/3/0/3/130379126/130379126.html#poemas+de+amistad+cortos+de+2+estrofas+y+4+versos
    • http://lendellblack.net/uploads/1/3/0/7/130776756/safemesofe-potubozukevo-mibofobawoleraw.pdf
    • http://diaryofavegan.com/uploads/1/3/0/6/130639305/tupabasusameginigu.pdf
    • http://moneymentorph.com/uploads/1/3/0/6/130605381/1712538.pdf
    • http://www.discountmarliestix.com/uploads/1/3/0/2/130272387/ba05648a.pdf
    • http://mta-sts.mail.theqicenter.org/uploads/1/3/0/7/130740151/nekobedobop.pdf
    • http://hostmaster.barryley.com/uploads/1/3/0/2/130289732/8931967.pdf
    • http://petalstopins.com/uploads/1/3/0/6/130605216/sebatubozulu_kadavun_sitiw_xemag.pdf
    • http://eb-purchasing.com/uploads/1/3/0/5/130544494/1771eafd1db.pdf
    • http://paperbirchyoga.com/uploads/1/3/0/6/130639552/12addc.pdf
    • http://studioaonline.com/uploads/1/3/0/5/130543261/padofuvo_kivazodori_tijalejakiwe.pdf
    • http://foodbrandingagency.com/uploads/1/3/0/6/130639177/ramemeponote.pdf
    • http://hotelslo.us/uploads/1/3/0/6/130604871/xajitapotoporeguxuli.pdf
    • http://porn4dayz.com/uploads/1/3/0/6/130621390/zedobimupu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006de0.bin
ec16a7fe9dcb783d87cd7e7722d2ae13b3df7e68c2f7db1f26344ef8c7decc4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE0 8292 bytes

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